Rotary dressing device.



PATENTED APR..30, 1907.

V. SPIETSCHKA. ROTARY DRESSING DEVICE.

I NVENTO R lmd @eA/90D BY #www ATTYS APPLICATION FILED AUGJS. 1906.

H W .MSW

- VINZENZ SPIETSOHKA,

enrnivr onirica.

OF CLEVELAND, OHIO.

ROTARY DRESSING DEVICE.

Specification of Letters Patent.

la'tente. April 30, 1907.

Auolicnton led August 13,1906.. Serial No. 330,321.

T0 @ZZ when/1, it may concern.

Be it known that I, VINZENZ SPIETSGHKA,

a citizen. of the United States, residing at lleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Im rovements in Rotary Dressing Devices; an I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to rotary dressing devices, and the invention comprises the combination of parts all substantially as herein-- after described and more particularly pointed out inthe claims.

The invention is an improvement in that class of motor driven dressingr devices ada ted to be held to their work by han'd, and t iis particular device is especially adapted for planing, polishin and cleaning the curved walls of large tan s or vats,as well as floors or other flat surfaces which require evening or dressing.

In the accompanying drawings Figure 1 is a sectional view of my improved device on the longitudinal center thereof. Fig. 2 is an end view of the device as applied in use. Fig. 3 is a cross section df the removable cut ter supporting ring. Fig. 4 is a view of the roller frame arms with a coiled spring between.

The device embodies an electric motor which in part comprises a stationary armature 2 havin its shaft ends 3 splined or other Wise fixed vwithin the ends of arms 4 of handle. 5\ Arms 4 are separate right angled pieces having each a semi-circular threaded extensionl 6 adapted to be brought together and held as one by a threaded sleeve 7 mounted upon handle 5.

The iield coils 8 of the electric motor encircle armature 2 and are mounted upon the inner wall of cylindrical casing 9 by :field pieces 1() which are screwed into place thereon by screws 11. Casing 9 has end plates 12 with hushed hubs 14 which rotate upony armature shaft ends 3 at the side of handle arms 4. Electrical connections 15 for the motor extend from the outside through bore 16 in shaft end 3 at the left of lthe device and connect with' contact rings 17 and 18-respectively on lthe said shaft end. Carbon brushes 19 and 20,'res ectively, conv'eythecurrent to thefields with which they are connected and otherbrushes 21 at the.

J right of the device contact with commutator 5 22 and colnplete the electrical circuit eonnec tions within the motor.

Casing 9 revolves and becomes the motor I driven part, and Upon this casing l mount a l suitable dressing tool or instimnent, which in this instance is shown as a co'tter ring 23 slidably splined lengthwise upon easing 9 and detachably secured in place thereon by screws 24. lling 23 has a series ol" cutting blades 25 screwed upon its ribs or bars 2G extending from end to end thereof and these blades may be staggered in respect to each other to provide an overlappingcnt or inclined to the axis to give a shearing eut or they may be substituted by brushes, sand paper parts or other suitable polishingr elements (not shown). In fact, ring 23 is removable, any other ring of like proportion having other dressing instruments, such as buiiing tools, may be interchanged therefor. To this end, handle arms 4 are separable to give a knockdown structure adapted to permit interchange of parts, especially of ring 23, although said ring may be made of separable portions as in Fig. 3 to permit its removal without disturbing the other parts.

The depth of cut or degree of contact between the dressing instrument of the device and the surface worked upon is established and maintained by a guide frame 27 comprising a pair of parallel rollers 28 carried by sets of diverging arms 29 located at each side of casing 9, and which arms are mounted free upon hubs 14 and are adjustably held in fixed relationship to each other and to the dressing tools by a turnbuckle connection 30. The working `plane of the cutT ters may be changed aty will by changing the angular relation between opposite arms 29, and this is done by adjusting turnbuckle connection 30. Either handle 5 or the roller supporting frame 27 may be swung to oneside or another of the axial center of the device as may be found most convenient in applying the device to its work. Or the device can be turned end for end to cut in either direction.

.A rigid one piece handlesupport may be Vsubstituted for arms 4 but handle '5 is preferably removably engaged with such support as it is often desirable and necessary to use longer handles.

In place of turnbuckle connection 30, I might employ a coiled spring 31,` see Fig. 4, to hold arms 29 in yielding relation and IOO ' whereby the depth of cut may be governed 2. In a rotary dressing device, a motorA armature and a double armed handle in which said armature is .mountedfin combination with motor fields and a rotatable casing therefor mounted at its ends on the axis of the armature and a dressing member removably supported upon said casing, said member having a dressing portion'running parallel with the surface of said vcasing lengthwise.

3. In a rotary dressing device, a motor driven casing and a supporting handle in which said casing is mounted, a dressing instrument removably secured upon the outside of said casing, and an adjustable guide,- iirame adapted for variable setting of said dressing instrument to the work provided with two arms at each end and adapted to rest upon the work both in front and behindI the said dressing instrument at the ends thereof.

4. In a rotary dressing device, a .double armed handle `support and a motor driven casing rotatably mounted therein, a dressing tool removably secured upon the periphery of said casing and a swinging guide frame comprising rollers and adjusting parts adapted t'o set said dressing tool to the work, said frame having two diverging arms at each end of said cylinder provided with said .rollers in their ends and mounted about the aXis of said cylinder.

5. In a rotary dressing device, a motor armature and a double armed handle aHiXed thereto, a rotatable casing having motor fields Iand contact members mounted in said casing, a dressing tool carrier removably secured upon said casing, and a swinging guide frame for said device having its bearings at each end thereof and outside the path of said casing. 6. Iri' a rotary dressing device, the motor comprising the fixed armature, the revolving iields and current conveying parts and a rotatable support for said eldsand double armed handle in which 'said partsV are supported, in combination with a dressing tool removably mounted upon said rotatable support, "and a roller guide frame comprising diverging arms 'at each end and adjustable connections adapted to set said dressing tool to the work. A

7. In a rotarydressing device, a motor comprising a stationary armature and rotatable fields and a'two armed handle in which said armature is mounted, in combination with a cylindrical casingl for said fields, a removable ring about said 'casing and cutters removably secured to'said ring, and a guide -frame comprising diverging arms and rollers thereon with an adjustable connection "therefor adapted .to set s.' `l dressingl tools to the work.

In testimony whereof I signl this specifica-` tion'in the presence of two witnesses.

, VINZENZ SPIETSCHKA,

VVitne'ssesff- R.v B. MOSER, C. A. SELL. 

